- opposed to; in conflict or disagreement with
- standing or leaning beside or in front of: a ladder against the wall
- coming in contact with
- in contrast to: silhouettes are outlines against a light background
- having an adverse or unfavourable effect on: the economic system works against small independent companies
- as a protection from or means of defence from the adverse effects of: a safeguard against contaminated water
- in exchange for or in return for
- rare in preparation for: he gave them warm clothing against their journey through the night
- as against ⇒ as opposed to or as compared with
WordReference Random House Learner's Dictionary of American English © 2019
- in opposition to;
contrary to:twenty votes against ten.
- in resistance to or defense from:protection against mosquitoes.
- in an opposite direction to:walking against the wind.
- in or into contact with;
upon:Don't lean against the door.
- in preparation for:saving money against a rainy day.
- having as background: a design of flowers against a dark wall.
- Businessto be deducted from:The loan was an advance against salary.
- in competition with:a race against time.
- in contrast with:Use reason as against emotion.
- have something against, [~ + object] to be in opposition to;
be opposed to:She has something against my attending the class.
- in opposition to;
adverse or hostile to:twenty votes against ten; against reason.
- in resistance to or defense from:protection against burglars.
- in an opposite direction to:to ride against the wind.
- into contact or collision with;
upon:The rain beat against the window.
- in contact with:to lean against the wall.
- in preparation for;
in provision for:money saved against a rainy day.
- having as background:a design of flowers against a dark wall.
- Businessin exchange for;
as a balance to or debit or charge on:He asked for an advance against his salary.
- in competition with:a racehorse running against his own record time.
- in comparison or contrast with:a matter of reason as against emotion.
before:The car is against the building.
- over against, in contrast with:the rich over against the poor.
by the time that.
- 1125–75; Middle English agens, ageynes, equivalent. to ageyn again + -es -s1; for -t compare whilst, amongst